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Patent classifications
G
PHYSICS
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G11
INFORMATION STORAGE
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G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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2220/00
Record carriers by type
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G11B2220/20
Disc-shaped record carriers
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G11B2220/25
characterised in that the disc is based on a specific recording technology
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G11B2220/2537
Optical discs
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